The Vatican on Sunday released the first photograph of Pope Francis since his hospitalization over a month ago, showing the pontiff celebrating Mass earlier in the day from the chapel in his hospital suite.

The release of the photo a month into his treatment came after dozens of young people gathered under the pontiff’s windows to offer wishes for a quick recovery.

With Pope Francis entering his fourth week in hospital, those working in the Apostolic Palace are grappling with the continuing uncertainty over the pope’s health. The same is true for everyone in the Vatican.